• Adams Rite Manufacturing Co.

• Air Conditioning Exchange, Inc.

• AllStyle Coil Company, Inc.

• Amana Appliances

• American Standard Heating and Air Conditioning

• Arcoaire Heating & Cooling Products

• Bard Manufacturing Company

• Bruce Mfg

• Calmac Mfg. Corp.

• Caloritech Inc., Canada

• Caloritech Inc., USA

• Chain Link Systems

• Check-Point Mechanical Systems Ltd.

• Clean Burn

• Comfortmaker

• Delval Equipment Corporation

• Donlee Technologies

• Dornback Furnace & Foundry, Co.

• Ecco Heating Products Ltd.

• Evcon Industries (York International Corp.)

• Halco Products Co. Div.

• Hastings HVAC, Inc.

• Heat Controller, Inc.

• Heil Heating & Cooling Products

• International Comfort Product

• International Refractory Services Corp.

• Joseph Davis

• Juca Super Fireplace

• Louisville Tin & Stove Co.

• New Buck Corporation

• Nibco Inc.

• Nordyne

• Power Flame

• Powrmatic, Inc.

• Schwank USA

• Siebring Manufacturing, Inc.

• Thermal Systems

• Thermo Products

• Tom Brown Contracting, Inc.

• Trane Co.

• Victa Hytemp Industries

• Waterfurnace

• Will-Burt Company

• William Steinen Mfg

• Williams Furnace Co.

• World Panel Products, Inc.

• York International Corp.